The money is expected to pay for 75 percent of the cost of emergency patrols, closing roads, conducting search and rescue, and staffing the 911 service and the parish jail during the August 2012 disaster. Local governments are paying 25 percent of their costs related to Isaac.

It was not immediately clear whether the $2.2 million is the figure the sheriff's office was seeking for storm expenses.

"The men and women of the Jefferson Parish Sheriff's Office worked the front lines to make sure residents were safe during this destructive hurricane," said Federal Coordinating Officer Gerard Stolar. "Their work before, during and after the storm helped prevent property damage and save lives."

The agency said the sheriff's office grant is part of more than $365 million in assistance to individuals and governments across the South approved since Isaac.